Method: projects.files.annotate

Service that performs image detection and annotation for a batch of files. Now only "application/pdf", "image/tiff" and "image/gif" are supported.

This service will extract at most 5 (customers can specify which 5 in AnnotateFileRequest.pages) frames (gif) or pages (pdf or tiff) from each file provided and perform detection and annotation for each image extracted.

HTTP request


The URL uses gRPC Transcoding syntax.

Path parameters



Optional. Target project and location to make a call.

Format: projects/{project-id}/locations/{location-id}.

If no parent is specified, a region will be chosen automatically.

Supported location-ids: us: USA country only, asia: East asia areas, like Japan, Taiwan, eu: The European Union.

Example: projects/project-A/locations/eu.

Request body

The request body contains data with the following structure:

JSON representation
  "requests": [
      object (AnnotateFileRequest)

object (AnnotateFileRequest)

Required. The list of file annotation requests. Right now we support only one AnnotateFileRequest in BatchAnnotateFilesRequest.

Response body

If successful, the response body contains an instance of BatchAnnotateFilesResponse.

Authorization Scopes

Requires one of the following OAuth scopes:


For more information, see the Authentication Overview.